I purchased this in my usual size and it was perfect, definitely roomy and oversized but the body is so short, the crotch was too high and made it look like to was both too small and too big. It pulls the waist seam down too due to how short it is. A size up would be far too big everywhere else. Perhaps I received one sewn incorrectly, otherwise I think this is a design issue rather than a sizing one. In the first photo you can see what I mean slightly if you zoom into the waist seam.
I did consider sizing up just to see, but it wouldn't allow me to exchange for a 12 despite it being in stock, and the price had then gone back up by 20% so I'd have had to pay more to do so. Not very impressed really.
